Custom Round-to-Rectangular Tube Adapter STL file ⌀50 mm to 49×28.5 mm, thickness 2 mm + offset 📦#7148

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3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀50 mm and a rectangular section with inner dimensions 49×28.5 mm. The wall thickness is 2 mm and the total length is 75 mm. The adapter has an offset of 10 mm along the Y axis and 2.5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Generation date: 2026-02-09
3D Model Round-to-Rectangular Tube Adapter STL file ⌀50 mm to 49×28.5 mm, thickness 2 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model7148-nb0_dd{id}.stl : 1.9 Mo
STL Mesh quality : Linear deflection 0.0005 Angular deflection 0.05
No compliance warranty No compliance warranty
(Internal and private use, non-commercial – no distribution – no derivatives)
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Values for this model

This model was generated by the Round to rectangular adapter template, with the following values:
Parameter Value
#1 cylinder outer diameter 50 mm (≃1.97 in)
#2 cylinder inlet length 50 mm (≃1.97 in)
#3 rectangle internal length 49 mm (≃1 15/16 in)
#4 rectangle internal height 28.5 mm (≃1 1/8 in)
#5 rectangle inlet length 5 mm (≃3/16 in)
#6 offset Z 2.5 mm (≃0.10 in)
#7 offset Y 10 mm (≃0.39 in)
#8 total length 75 mm (≃2 15/16 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 46 mm (≃1 13/16 in)
illustration of the parameters
Parameter overview

  • If the chamfer option on the ends is enabled, the chamfer length is equal to half the thickness.
  • The stop at the bottom of the rectangular section has a width equal to half the thickness.

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 cylinder outer diameter diaC
#2 cylinder inlet length lentC
#3 rectangle internal length lenIR
#4 rectangle internal height heiIR
#5 rectangle inlet length lentR
#6 offset Z ofsZ
#7 offset Y ofsY
#8 total length lenT
#9 thickness thi
#10 chamfer cha

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Parameter Value Unit
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cylinder inlet length 25 mm
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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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thickness 2 mm
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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL file ⌀20.3 mm to 20×10 mm, thickness 2 mm + offset (📦 #1811)

1 object(s) - format STL
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Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀20.3 mm and a rectangular section with internal dimensions 20×10 mm. The wall thickness is 2 mm and the total length is 75 mm. The adapter has an offset of 3 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×48 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀60 mm and a rectangular section with internal dimensions 100×48 mm. The shell thickness is 2 mm and the overall length is 100 mm. The adapter has an offset of 15 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
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cylinder inlet length 30 mm
rectangle internal length 100 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 101.6×101.6 mm, thickness 2 mm (📦 #4767)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 101.6×101.6 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀101.6 mm and a rectangular section with inner dimensions 101.6×101.6 mm. The shell thickness is 2 mm and the total length is 75 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 50 mm
rectangle internal length 101.6 mm
rectangle internal height 101.6 mm
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Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 50×100.5 mm, thickness 2 mm + offset (📦 #6815)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 50×100.5 mm, thickness 2 mm + offset
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀80 mm and a rectangular section with inner dimensions 50×100.5 mm. The wall thickness is 2 mm and the overall length is 90 mm. The adapter has an offset of 15 mm along the Y axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 80 mm
cylinder inlet length 20 mm
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1 object(s) - format STL
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Parameter Value Unit
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1 object(s) - format STL
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Parameter Value Unit
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cylinder inlet length 20 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀33 mm to 80×15 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀33 mm and a rectangular section with inner dimensions 80×15 mm. The shell thickness is 3 mm and the total length is 120 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 33 mm
cylinder inlet length 39 mm
rectangle internal length 80 mm
rectangle internal height 15 mm
rectangle inlet length 30 mm
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offset Y 0 mm
total length 120 mm
thickness 3 mm
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1 object(s) - format STL
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Parameter Value Unit
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cylinder inlet length 15 mm
rectangle internal length 55.1 mm
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offset Y 0 mm
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1 object(s) - format STL
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Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀39 mm and a rectangular section with inner dimensions 45×13 mm. The shell thickness is 2 mm and the overall length is 55 mm. The adapter has an offset of 5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 39 mm
cylinder inlet length 15 mm
rectangle internal length 45 mm
rectangle internal height 13 mm
rectangle inlet length 20 mm
offset Z 5 mm
offset Y 0 mm
total length 55 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀39 mm to 43.5×12.5 mm, thickness 2 mm + offset (📦 #4978)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀39 mm to 43.5×12.5 mm, thickness 2 mm + offset
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀39 mm and a rectangular section with inner dimensions 43.5×12.5 mm. The wall thickness is 2 mm and the total length is 55 mm. The adapter has an offset of 5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 39 mm
cylinder inlet length 15 mm
rectangle internal length 43.5 mm
rectangle internal height 12.5 mm
rectangle inlet length 20 mm
offset Z 5 mm
offset Y 0 mm
total length 55 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀76 mm to 120×50 mm, thickness 2 mm (📦 #9156)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀76 mm to 120×50 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀76 mm and a rectangular section with inner dimensions 120×50 mm. The wall thickness is 2 mm and the total length is 90 mm. A chamfer is applied on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 32 mm
rectangle internal length 120 mm
rectangle internal height 50 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 90 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 32×40 mm, thickness 2 mm (📦 #1988)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 32×40 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀60 mm and a rectangular section with inner dimensions 32×40 mm. The shell thickness is 2 mm and the overall length is 130 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 60 mm
cylinder inlet length 80 mm
rectangle internal length 32 mm
rectangle internal height 40 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 130 mm
thickness 2 mm
chamfer chamfers on ...